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<head>
    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app"></div>
    <script src="../src/react.js"></script>
    <script src="../src/react-dom.js"></script>
    <script src="../src/babel.js"></script>
    <script type="text/babel">

        class Onec extends React.Component{
            constructor(){
                super()
            }
            render(){
                return <div>111,{this.props.o}</div>
            }
        }
        let element = (
            <div>
                <Onec o="occ"></Onec>    
            </div>
        )

        ReactDOM.render(
            element,
            document.getElementById("app")
        )

    </script>
</body>

</html>